Shears.



C. VESTERGAARD.

sHEARs. APPLICATION FILED OCT. 30 1912.

l ,l 83,9 1 9. y Patented May 23, 1916.

CHRISTIAN vEsTnnGAAnn, orjcIIIcAeo, ILLINOIS. i,

sHEARs.

Specification cf Letters Patent.

Patented May 23, 1916;

Application filed October 30, 1912. Serial No. 728,550.

To all whom t may concern Be it known that I, CHRISTIAN VEsTER- GAARD, a citizen of the United States, and a resident of the city of Chicago, county of Cook and State of Illinois, have invented certain new and useful Improvements iny tions and arrangements of parts hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawing forming a part of this specilication, and in which,

Figure 1 is a perspective view of a shear embodying my invention, Fig. 2i is a top plan view thereof, and Fig. 3 is an enlarged vertical transverse section taken on line w-m of Fig. 2.

The preferred form of construction as illustrated in the drawing comprises a base member 1 which is angular in cross section, consisting of a base or horizontally extending flange 2 and a vertically extending flange 3. The flange 2 is perforated for the accommodation of bolts or other suitable securing devices 4 for securely fastening base member 1 upon a table top or other suitable place or support. Arranged upon one side of the vertically extending flange 3 is a relatively stationary blade 5,`said blade being removably secured to the ange 3 by means of screws 6 which are threaded into said flange, v

the heads of said screws being counter-sunk in the outer face of said blade so as to be flush therewith for obvious reasons. Formed at the base of the flange 3 is a shoulder 7 positioned for contact with-the back or lower edge of the blade 5 in order to reinforce the same and relieve the strain upon screws 6, it lbeing clear that in the operation of the shear the strain or pressure upon blade 5 will be downwardly. Coperating with the base member l1 is an elongated lever 8 one end of which is fulcrumed to the corresponding end of flange 3 of base member 1 by means of a bolt 9 and nut 10.

Carried by the ylever 8 is a relatively movable blade 11 which is removably secured to said lever by, means of screws 12 threaded into said lever, the heads of said screws be- Ing counter-sunk in the outer face of said blade so as not to interfere inthe shearing operation as will be readily understood. Formed upon the lever 8 is a shoulder 13 which coperates with the back edge of the blade 11 in the same manner as the shoulder 7 coperates with the blade 5, as above set forth.

In using the device itis only required to engage the outer end of lever 8 and oscillate v the same, such oscillation of said lever effecting the operative movement of the blade 11 to effect the shearing or cutting of the work arranged between the said blade and the relatively stationary blade 5. The

blades 5 and 11 are curved, as shown in Fig.

2 so that their concave sides contact with each other, such curvature ofk said blades insuring close engagement of the cutting edge thereof and hence the effective shearing or cutting operation when the device is in use'. By removably securing the lever 8 to the base member 1, and by removably securing the cutting blades to said lever and base member, the device may .be readily disassembled in order to permit of ready sharpening of the blades or of the replacement thereof. Sharpening of the blades may, however, be effected without removal of the same from the base member or lever since the cutting edges thereof are readily accessible for contact with an emery wheel, grindstone or other sharpening or abrasive element.

The shear is simple and economical in construction and hence may be manufactured at a low cost.

While I have illustrated and described the,y

modications as come within the scope ofy the appended claim.

Having described my invention what I claim as new and desire to secure by Letters Patentl is:

A shear of the class described, comprising a stationary base member angular in cross section consisting of a horizontal and vertically extendingange, a relatively stationary blade arranged'on said vertically extending lange, co-extensive in length therewith, and projecting above the upper edge thereof, said vertical flange having a shoulder supporting the lower edge of said blade, an upwardly extending ear on one end of said flange, a pivot bolt extending through 'said ear and said blade,` a lever, a relatively movable blade fixed to said lever,

said bolt extending through said lever and Copies of this patent may be obtained for said movable blade adjacent one end thereof and said lever being provided with a shoulder engaging the upper edge of said blade, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHRISTIAN VESTERGAARD.

Witnesses JOSHUA R. I-I. Po'rTs, A. A. OLSON.

five cents each, by addressing the Commissioner of Patents,

rWashington, '.D. C. 

